Middle frame assembly and terminal

Abstract

The invention relates to a middle frame assembly and a terminal. The middle frame assembly comprises a frame, at least one part of the frame is configured to be an antenna radiator, the antenna radiator comprises a first radiation section, a connection section and a second radiation section which are connected in sequence, and the connection section is grounded through an isolation capacitor; an upper frame point of the first antenna is arranged on the second radiation section; an upper frame point of the second antenna is arranged on the first radiation section; an upper frame point of the third antenna is arranged on the antenna radiator; and the detection module is connected to the antenna radiator, and the detection module obtains the electric signal of the antenna radiator. According to the arrangement of the invention, on one hand, the use of elements can be realized, the cost and space are saved, and on the other hand, multiple antennas can share the same frame, and the antenna performance is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of middle frame assembly manufacturing, and in particular to a middle frame assembly and a terminal. Background Art

[0002] With the development of communication technology, the application scenarios of terminals are increasing. In order to meet the usage requirements in different scenarios, the number of antennas installed on terminals is also increasing. Communication antennas have electromagnetic waves, and under the action of external electromagnetic fields, induced electromagnetic fields will be generated in the human body.

[0003] Usually, a detection module is provided in a mobile phone to detect whether a human body is approaching the terminal. However, due to the limitation of the terminal size and thinness, the current setting position and number of the sensing end of the detection module cannot detect whether a human body is approaching in a timely and accurate manner. Summary of the invention

[0004] In order to overcome the problems existing in the related art, the present disclosure provides a middle frame assembly and a terminal.

[0005] According to a first aspect of an embodiment of the present disclosure, a middle frame assembly is provided, comprising: a frame, at least a portion of which is configured as an antenna radiator, the antenna radiator comprising a first radiating section, a connecting section, and a second radiating section connected in sequence, the connecting section being grounded via an isolation capacitor; a first antenna, an upper frame point of the first antenna being arranged at the second radiating section; a second antenna, an upper frame point of the second antenna being arranged at the first radiating section; a third antenna, an upper frame point of the third antenna being arranged at the antenna radiator; and a detection module, connected to the antenna radiator, the detection module acquiring an electrical signal of the antenna radiator.

[0006] In some embodiments, the first radiating segment extends in a first direction, and the second radiating segment extends in a second direction.

[0007] In some embodiments, the upper frame point of the third antenna is set at the first radiation segment, and the antenna frequency band covered by the third antenna is different from the antenna frequency band covered by the second antenna.

[0008] In some embodiments, the upper frame point of the second antenna is disposed between the upper frame point of the third antenna and the connecting segment.

[0009] In some embodiments, the frame includes a first break and a second break, the first break is adjacent to the first end of the antenna radiator, the second break is adjacent to the second end of the antenna radiator, and the first end and the second end are arranged opposite to each other.

[0010] In some embodiments, the first antenna is configured to cover a first frequency band and a second frequency band in different time periods, respectively.

[0011] In some embodiments, the first antenna includes a first matching circuit, a second matching circuit, a first upper frame point, and a second upper frame point; the first matching circuit is electrically connected to the second radiation segment through the first upper frame point, and the first matching circuit includes a first switch group and a first antenna isolation capacitor; the second matching circuit is electrically connected to the second radiation segment through the second upper frame point, and the second matching circuit includes a second switch group.

[0012] In some embodiments, when the first antenna covers the first frequency band, the first switch group is disconnected, and in the second direction, the distance between the connecting section and the second end corresponds to one quarter of the wavelength of the first frequency band.

[0013] In some embodiments, when the first antenna covers the second frequency band, the first switch group is turned on and grounded through the first antenna isolation capacitor, and in the second direction, the distance between the first upper frame point and the second end corresponds to one-quarter wavelength of the intermediate frequency band of the second frequency band, and the distance between the second upper frame point and the second end of the first antenna corresponds to one-quarter wavelength of the high frequency band of the second frequency band.

[0014] In some embodiments, the second matching circuit includes a second switch group and a third switch group connected in series with each other; the second switch group includes a plurality of first switches connected in parallel with each other, and capacitors connected in series with the plurality of first switches respectively; the third switch group includes a plurality of second switches connected in parallel with each other, and inductors connected in series with the plurality of second switches respectively.

[0015] In some embodiments, the second matching circuit includes a first matching capacitor and a second matching capacitor connected to each other, one end of the second switch group is grounded, and the other end of the second switch group is connected to a connection node between the first matching capacitor and the second matching capacitor.

[0016] In some embodiments, one end of the third switch group is grounded, and the other end of the third switch group is connected to a connection node between the first matching capacitor and the second matching capacitor.

[0017] In some embodiments, the second matching circuit includes a matching inductor, a first end of the matching inductor is connected to the first matching capacitor, a second end of the matching inductor is grounded, and the second end is connected to an input end of the second matching circuit.

[0018] In some embodiments, the second matching circuit includes a second antenna isolation capacitor, one end of the second antenna isolation capacitor is grounded, and the other end of the first antenna isolation capacitor is connected to the second end of the matching inductor.

[0019] In some embodiments, the connecting section is provided with a first isolation portion and a second isolation portion, and the second isolation portion is provided between the first isolation portion and the second radiation section; the isolation capacitor includes a first antenna isolation capacitor and a second isolation capacitor, the first antenna isolation capacitor is provided in the first isolation portion, and the second isolation capacitor is provided in the second isolation portion.

[0020] In some embodiments, in the first direction, the distance between the upper frame point of the first isolation portion and the first end is 17mm to 21mm; and in the second direction, the distance between the upper frame point of the second isolation portion and the second end is 34mm to 45mm.

[0021] In some embodiments, in the second direction, the distance between the first upper frame point of the first antenna and the second end is 16mm~20mm; in the second direction, the distance between the second upper frame point of the first antenna and the second end is 5mm~8mm, wherein the first upper frame point is located between the second isolation portion and the second end, and the second upper frame point is located between the second end and the first upper frame point.

[0022] In some embodiments, the first frequency band is 700M-960M; the second frequency band is 1710M-2690M.

[0023] In some embodiments, the second antenna includes a third frequency band and a fourth frequency band. In the first direction, the distance between the upper frame point of the first isolation portion and the first end corresponds to one-quarter wavelength of the third frequency band of the second antenna, and the distance between the upper frame point of the second antenna and the first end corresponds to one-quarter wavelength of the fourth frequency band of the second antenna.

[0024] In some embodiments, the third frequency band is 1.575G; and / or the fourth frequency band is 2.402-2.48G.

[0025] In some embodiments, in the first direction, the distance between the upper frame point of the first isolation portion and the first end is 17 mm to 21 mm, and the distance between the upper frame point of the second antenna and the first end is 5 mm to 8 mm.

[0026] In some embodiments, in the first direction, a distance between an upper frame point of the third antenna and the first end corresponds to a quarter wavelength of a frequency band of the third antenna.

[0027] In some embodiments, in the first direction, a distance between an upper frame point of the third antenna and the first end is 1 mm to 3 mm.

[0028] In some embodiments, the frequency band covered by the third antenna is 5.15G to 5.85G.

[0029] In some embodiments, the detection module is electrically connected to the antenna radiator through a third matching circuit, and the third matching circuit at least includes a detection inductor.

[0030] In some embodiments, in the first direction, the length of the connecting segment is 5 mm to 10 mm; and / or in the second direction, the length of the connecting segment is 5 mm to 10 mm.

[0031] In some embodiments, the first radiating segment is located at the head of the frame.

[0032] In some embodiments, the antenna is grounded via an antenna isolation capacitor, and the sum of the capacitance values ​​of the isolation capacitor and the antenna isolation capacitor is less than or equal to 200 pF.

[0033] According to a second aspect of an embodiment of the present disclosure, a terminal is provided, comprising a middle frame assembly as described in any one of the aforementioned embodiments.

[0034] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: at least one section of the frame of the present disclosure may be used as an antenna radiator, and may include at least three antennas framed on the antenna radiator. At the same time, the detection module is connected to the antenna radiator to receive the electrical signal of the antenna radiator. Through such a setting, multiple antennas can be framed on the antenna radiator, and the antenna radiator can also be used as part of the detection module, while playing the functions required by the antenna and the detection module respectively. The setting of the present disclosure, on the one hand, can realize the use of components, saving costs and space, and on the other hand, it is also conducive to realizing multiple antennas in the same frame and increasing antenna performance.

[0035] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0037] Figure 1 is a plan view of a middle frame assembly according to an exemplary embodiment.

[0038] Figure 2 The diagram is a schematic diagram showing a circuit connection relationship of a middle frame assembly according to an exemplary embodiment.

[0039] Figure 3is a schematic diagram showing a circuit connection relationship of a middle frame assembly according to another exemplary embodiment.

[0040] Figure 4 It is a schematic diagram of simulation results of a first antenna of a middle frame assembly according to an exemplary embodiment.

[0041] Figure 5 It is a schematic diagram of simulation efficiency of a first antenna of a middle frame assembly according to an exemplary embodiment.

[0042] Figure 6 It is a schematic diagram of simulation results of a second antenna of a middle frame assembly according to an exemplary embodiment.

[0043] Figure 7 It is a schematic diagram of simulation efficiency of a second antenna of a middle frame assembly according to an exemplary embodiment.

[0044] Figure 8 It is a schematic diagram of simulation results of a third antenna of a middle frame assembly according to an exemplary embodiment.

[0045] Fig. 9 It is a schematic diagram of simulation efficiency of a third antenna of a middle frame assembly according to an exemplary embodiment.

[0046] Fig.10 It is a schematic diagram of simulation results of a first antenna and a second antenna of a middle frame assembly according to an exemplary embodiment.

[0047] Fig.11 It is a schematic diagram of simulation results of a first antenna and a third antenna of a middle frame assembly according to an exemplary embodiment.

[0048] Fig.12 It is a schematic diagram of simulation results of a second antenna and a third antenna of a middle frame assembly according to an exemplary embodiment.

[0049] Fig.13 is a block diagram of a device according to an exemplary embodiment DETAILED DESCRIPTION

[0050] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0051] With the development of communication technology, the application scenarios of terminals are increasing. In order to meet the usage requirements in different scenarios, the number of antennas installed on terminals is also increasing. Communication antennas have electromagnetic waves, and under the action of external electromagnetic fields, induced electromagnetic fields will be generated in the human body.

[0052] Usually, a detection module is provided in a mobile phone to detect whether a human body is approaching the terminal. However, due to the limitation of the terminal size and thinness, the current setting position and number of the sensing end of the detection module cannot detect whether a human body is approaching in a timely and accurate manner.

[0053] In order to overcome the problems existing in the related art, the present disclosure provides a middle frame assembly and a terminal.

[0054] According to a first aspect of an embodiment of the present disclosure, a middle frame assembly is provided, including: a frame, at least a portion of which is configured as an antenna radiator, the antenna radiator including a first radiating section, a connecting section, and a second radiating section connected in sequence, the connecting section being grounded through an isolation capacitor; a first antenna, an upper frame point of the first antenna being arranged at the second radiating section; a second antenna, an upper frame point of the second antenna being arranged at the first radiating section; a third antenna, an upper frame point of the third antenna being arranged at the antenna radiator; and a detection module, connected to the antenna radiator, the detection module acquiring an electrical signal of the antenna radiator.

[0055] At least one section of the frame of the present disclosure can be used as an antenna radiator, and can include at least three antennas framed on the antenna radiator. At the same time, the detection module is connected to the antenna radiator to receive the electrical signal of the antenna radiator. Through such a setting, multiple antennas can be framed on the antenna radiator, and the antenna radiator can also be used as part of the detection module, while playing the functions required by the antenna and the detection module respectively. The setting of the present disclosure, on the one hand, can realize the use of components, save costs and space, and on the other hand, it is also conducive to realizing multiple antennas in the same frame and increasing antenna performance.

[0056] Figure 1 is a plan view of a middle frame assembly according to an exemplary embodiment. Figure 2 FIG. 1 is a schematic diagram showing a circuit connection relationship of a middle frame assembly according to an exemplary embodiment. Figure 1 and Figure 2 As shown, the middle frame assembly 1 may include a middle frame and a frame, the frame may include a first frame segment 10 and an antenna radiator 20, the first frame segment 10 and the antenna radiator 20 are not connected to each other, the first frame segment 10 and the antenna radiator 20 are separated or disconnected from each other, for example, the first frame segment 10 may be adjacent to both ends of the antenna radiator 20 but not connected.

[0057] For example, the frame may be provided with a first break 31 and a second break 32, and the antenna radiator 20 may be located between the first break 31 and the second break 32. It can also be considered that the section of the frame between the first break 31 and the second break 32 serves as the antenna radiator.

[0058] For example, the antenna radiator 20 may include a first end 21 and a second end 22, and the first end 21 of the antenna radiator 20 may be adjacent to the first slit 31 and separated from the antenna radiator 20 by the first slit 31. The second end 22 of the antenna radiator 20 may be adjacent to the second slit 32 and separated from the antenna radiator 20 by the second slit 32.

[0059] like Figure 1 and Figure 2 As shown, the first break 31 may be a break formed on the frame. However, the present disclosure is not limited thereto, and in some embodiments, the first break 31 may also be other components that can prevent the first frame segment 10 and the antenna radiator 20 from being electrically connected to each other, for example, the first break 31 may be an insulating component.

[0060] like Figure 1 and Figure 2 As shown, the second break 32 may be a break formed on the frame. However, the present disclosure is not limited thereto, and in some embodiments, the second break 32 may also be other components that can prevent the first frame segment 10 and the antenna radiator 20 from being electrically connected to each other, for example, the second break 32 may be an insulating component.

[0061] like Figure 1 and Figure 2 As shown, the antenna radiator 20 can be an antenna radiating segment as a part of the antenna. In addition, the antenna radiator 20 can also be grounded through an isolation capacitor. Through such a setting, the antenna radiator 20 is suspended, so that the detection module Z can sense external conditions by acquiring the electrical signal of the first frame segment 10, for example, sensing the distance between the human body and the terminal or the middle frame assembly.

[0062] like Figure 1 As shown, in an exemplary embodiment of the present disclosure, the antenna radiator 20 may include a first radiating segment 23 and a second radiating segment 24, the first radiating segment 23 may extend in a first direction X, the second radiating segment 24 may extend in a second direction Y, and the connection point between the isolation capacitor and the antenna radiator 20 may be located between the first radiating segment 23 and the second radiating segment 24.

[0063] like Figure 1 and Figure 2As shown, the antenna radiator 20 may further include a connecting section 25 located between the first radiating section 23 and the second radiating section 24, and the first radiating section 23 and the second radiating section 24 may be connected to each other through the connecting section. The first radiating section 23, the connecting section 25 and the second radiating section 24 may be connected in sequence.

[0064] like Figure 1 As shown, in an exemplary embodiment of the present disclosure, in the first direction X, the length L5 of the connecting section 25 may be 5 mm to 10 mm, for example, the length L5 of the connecting section 25 may be about 8.5 mm. However, the present disclosure is not limited thereto, and in some embodiments, the length L5 of the connecting section 25 may be arbitrarily set.

[0065] like Figure 1 As shown, in an exemplary embodiment of the present disclosure, in the second direction Y, the length L10 of the connecting section 25 may be 5 mm to 10 mm, for example, the length L10 of the connecting section 25 may be about 8.5 mm. However, the present disclosure is not limited thereto, and in some embodiments, the length L10 of the connecting section 25 is arbitrarily set.

[0066] like Figure 1 As shown, the connecting section 25 may be provided with a first isolation portion and a second isolation portion, the first isolation portion is provided close to the first radiation section 23 , and the second isolation portion is provided close to the second radiation section 24 .

[0067] like Figure 1 and Figure 2 As shown, in an exemplary embodiment of the present disclosure, the isolation capacitor can be set in the connecting section 25. The isolation capacitor may include a first isolation capacitor C6 and a second isolation capacitor C7, the first isolation capacitor C6 may be set in the first isolation part, and the second isolation capacitor C7 may be set in the second isolation part. However, the present disclosure is not limited thereto, and in some embodiments, the number and setting position of the isolation capacitors may be different.

[0068] In an exemplary embodiment of the present disclosure, in the first direction X, the distance L2+L3+L4 between the upper frame point C of the first isolating portion and the first end 21 may be 17 mm to 21 mm. For example, in the first direction X, the distance L2+L3+L4 between the upper frame point C of the first isolating portion and the first end 21 may be about 18 mm.

[0069] like Figure 2 As shown, in an exemplary embodiment of the present disclosure, the middle frame assembly 1 may further include multiple antennas covering multiple frequency bands. For example, the multiple antennas may include a first antenna 41 , a second antenna 42 , and a third antenna 43 .

[0070] like Figure 2As shown, the first antenna 41 may be disposed at the second radiation section 24. In the present disclosure, the first antenna 41 may be a LMHB antenna, but the present disclosure is not limited thereto, and the first antenna 41 may also be other antennas.

[0071] In an exemplary embodiment of the present disclosure, the first antenna 41 may be configured to cover the first frequency band and the second frequency band in different time periods. The first frequency band and the second frequency band may be different frequency bands. For example, the first frequency band may be 700M to 960M, that is, the first frequency band may be the LB frequency band of the LMHB antenna.

[0072] In an exemplary embodiment of the present disclosure, the second frequency band may be 1710M to 2690M, that is, the second frequency band may be the MHB frequency band of the LMHB antenna.

[0073] In the exemplary embodiment of the present disclosure, Figure 2 As shown, the first antenna 41 may include a first matching circuit 411 , a second matching circuit 412 , a first upper frame point E and a second upper frame point F.

[0074] The first matching circuit 411 can be electrically connected to the second radiation section 24 through the first upper frame point E. The first matching circuit 411 may include a first switch group SW1 and a first antenna isolation capacitor C8. The first matching circuit 411 may be grounded through the first antenna isolation capacitor C8, that is, the first matching circuit 411 is not directly grounded, so that the second radiation section 24 is suspended. The first switch group SW1 includes a ninth sub-switch RF9 and a tenth sub-switch RF10 connected in parallel to each other, and a first antenna isolation capacitor C8 connected in series with the ninth sub-switch RF9. The ninth sub-switch RF9 and the tenth sub-switch RF10 may be SPST antenna switches. The first matching circuit 411 may include an inductor L9.

[0075] The second matching circuit 412 may be electrically connected to the second radiation section 24 via the second upper frame point F. The second matching circuit 412 may include a second switch group SW2 and a third switch group SW3 which are connected in series.

[0076] For example, Figure 1 As shown, in an exemplary embodiment of the present disclosure, the first matching circuit 411 can be located between the second isolation capacitor C7 and the second end 22, the first upper frame point E can be located between the second isolation capacitor C7 and the second end 22, and the second upper frame point F is located between the second end 22 and the first upper frame point E.

[0077] In an exemplary embodiment of the present disclosure, when the first antenna 41 covers the first frequency band (e.g., 700M to 960M), the first switch group is disconnected, and in the second direction Y, the distance between the upper frame point D of the second isolation portion and the second end 22 corresponds to a quarter wavelength of the first frequency band. For example, in the second direction Y, the distance L6+L7+L8 between the upper frame point D of the second isolation portion and the second end 22 may be 34mm to 45mm. For example, in the second direction Y, the distance L6+L7+L8 between the upper frame point DD of the second isolation portion and the second end 22 may be about 35mm.

[0078] In an exemplary embodiment of the present disclosure, when the first antenna 41 covers the second frequency band, the first switch group SW1 is turned on and is grounded through the first antenna 41 isolation capacitor C8. In the second direction Y, the distance between the first upper frame point E and the second end 22 corresponds to one quarter of the wavelength of the intermediate frequency band of the second frequency band (for example, 1710M~2690M).

[0079] For example, Figure 1 As shown, in the exemplary embodiment of the present disclosure, in the second direction Y, the distance L7+L8 between the first upper frame point E of the first antenna 41 and the second end 22 is 16 mm to 20 mm. For example, in the second direction Y, the distance L7+L8 between the first upper frame point E of the first antenna 41 and the second end 22 is 19 mm. In this way, high-frequency radiation efficiency can be ensured.

[0080] In an exemplary embodiment of the present disclosure, the distance between the second upper frame point F of the first antenna 41 and the second end 22 may correspond to a quarter wavelength of the high frequency band of the second frequency band (eg, 1710M to 2690M). Figure 1 As shown, in the exemplary embodiment of the present disclosure, in the second direction Y, the distance L8 between the second upper frame point F of the first antenna 41 and the second end 22 is 5 mm to 8 mm. For example, in the second direction Y, the distance L8 between the second upper frame point F of the first antenna 41 and the second end 22 is 6 mm. In this way, high-frequency radiation efficiency can be ensured.

[0081] like Figure 2 As shown, in the present disclosure, the second matching circuit 412 may include a first matching capacitor C14 and a second matching capacitor C9, and the first matching capacitor C14 and the second matching capacitor C9 may be connected to each other. For example, the first matching capacitor C14 and the second matching capacitor C9 may be connected in series.

[0082] like Figure 2 As shown, in the present disclosure, one end of the second switch group SW2 is grounded, and the other end of the second switch group SW2 can be connected to a connection node between the first matching capacitor C14 and the second matching capacitor C9.

[0083] like Figure 2 As shown, in the present disclosure, a first end of the third switch group SW3 is grounded, and the other end of the third switch group SW3 can be connected to a connection node between the first matching capacitor C14 and the second matching capacitor C9.

[0084] like Figure 2 As shown, in the present disclosure, the second matching circuit 412 may include a matching inductor L9 , a first end of the matching inductor L9 is connected to the first matching capacitor C14 , and a second end of the matching inductor L9 may be grounded and may be connected to an input end of the second matching circuit 412 .

[0085] like Figure 2 As shown, in the present disclosure, the second matching circuit 412 may include a second antenna isolation capacitor C15, one end of the second antenna isolation capacitor C15 is grounded, and the other end of the second antenna isolation capacitor C15 may be connected to the second end of the matching inductor L9.

[0086] In the exemplary embodiment of the present disclosure, Figure 2 As shown, the second switch group SW2 may include a plurality of first switches connected in parallel to each other, and capacitors C10+C11+C12+C13 connected in series with the plurality of first switches, respectively. For example, the first switch group SW2 may include a first sub-switch RF1, a second sub-switch RF2, a third sub-switch RF3, and a fourth sub-switch RF4 connected in parallel to each other. And the first switch group SW2 may also include a capacitor C connected in series with the first sub-switch RF1, the second sub-switch RF2, the third sub-switch RF3, and the fourth sub-switch RF4, respectively. The first sub-switch RF1, the second sub-switch RF2, the third sub-switch RF3, and the fourth sub-switch RF4 may be SPST antenna switches.

[0087] In an exemplary embodiment of the present disclosure, the plurality of first switches include a first sub-switch RF1, a second sub-switch RF2, a third sub-switch RF3, and a fourth sub-switch RF4;

[0088] In this disclosure, the switching logic of the LMHB antenna and the way in which the LB realizes the switching state are specifically described as follows:

[0089] When the first switch group is turned off and the third switch group is turned off,

[0090] The first sub-switch RF1 is disconnected, the second sub-switch RF2 is disconnected, the third sub-switch RF3 is disconnected, and the fourth sub-switch RF4 is disconnected, and the first frequency band covers the downlink frequency band B8RX of the B8 frequency band;

[0091] The first sub-switch RF1 is turned off, the second sub-switch RF2 is turned off, the third sub-switch RF3 is turned off, and the fourth sub-switch RF4 is turned on. The first frequency band covers the uplink frequency band B8TX of the B8 frequency band and the downlink frequency band B5RX of the B5 frequency band;

[0092] The first sub-switch RF1 is turned off, the second sub-switch RF2 is turned off, the third sub-switch RF3 is turned on, the fourth sub-switch RF4 is turned off, and the first frequency band covers the uplink frequency band B5TX of the B5 frequency band;

[0093] The first sub-switch RF1 is turned off, the second sub-switch RF2 is turned on, the third sub-switch RF3 is turned off, and the fourth sub-switch RF4 is turned off. The first frequency band covers the downlink frequency band B28RX of the B28 frequency band;

[0094] The first sub-switch RF1 is turned on, the second sub-switch RF2 is turned off, the third sub-switch RF3 is turned off, and the fourth sub-switch RF4 is turned off. The first frequency band covers the uplink frequency band B28TX of the B28 frequency band.

[0095] In this disclosure, Figure 2 As shown, the third switch group SW3 may include a plurality of second switches connected in parallel to each other, and inductors L5+L6+L7+L8 connected in series with the plurality of second switches. The third switch group SW3 may include a fifth sub-switch RF5, a sixth sub-switch RF6, a seventh sub-switch RF7, and an eighth sub-switch RF8 connected in parallel to each other. The fifth sub-switch RF5, the sixth sub-switch RF6, the seventh sub-switch RF7, and the eighth sub-switch RF8 may be SPST antenna switches.

[0096] In this disclosure, the switching logic of the LMHB antenna and the way in which the MHB realizes the switching state are specifically described as follows:

[0097] In the present disclosure, when the ninth sub-switch RF9 is turned on, the tenth sub-switch RF10 is turned off, and the third switch group is turned off,

[0098] The fifth sub-switch RF5 is turned on, the sixth sub-switch RF6 is turned off, the seventh sub-switch RF7 is turned off, and the eighth sub-switch RF8 is turned off, and the second frequency band covers the B32 frequency band;

[0099] The fifth sub-switch RF5 is turned off, the sixth sub-switch RF6 is turned on, the seventh sub-switch RF7 is turned off, and the eighth sub-switch RF8 is turned off, and the second frequency band covers the B3 frequency band and the B41 frequency band;

[0100] The fifth sub-switch RF5 is turned off, the sixth sub-switch RF6 is turned off, the seventh sub-switch RF7 is turned on, and the eighth sub-switch RF8 is turned off, and the second frequency band covers the B1 frequency band;

[0101] The fifth sub-switch RF5 is turned off, the sixth sub-switch RF6 is turned off, the seventh sub-switch RF7 is turned off, and the eighth sub-switch RF8 is turned on, and the second frequency band covers the B40 frequency band.

[0102] like Figure 1As shown, in the second direction Y, the distance L9 between the second upper frame point F of the first antenna 41 and the second end 22 may be about 3 mm. The distance L9 between the second upper frame point F of the first antenna 41 and the second end 22 may serve as a parasitic branch of the first antenna 41 .

[0103] Figure 3 FIG. 1 is a schematic diagram showing a circuit connection relationship of a middle frame assembly according to another exemplary embodiment. Figure 3 As shown, in the exemplary embodiment of the present disclosure, the detection module Z can be electrically connected to the antenna radiator through a third matching circuit, and the third matching circuit at least includes a detection inductor L10. It should be noted that the connection position of the third matching circuit is not limited to Figure 3 The position shown in the figure can be any position of the antenna radiator 20 .

[0104] In an exemplary embodiment of the present disclosure, the detection module Z can be configured to detect the electromagnetic wave absorption ratio. SAR (Specific Absorption Rate) is the electromagnetic wave energy absorption ratio of terminals or wireless products such as mobile phones. Under the action of an external electromagnetic field, an induced electromagnetic field will be generated in the human body. Since various organs of the human body are lossy media, the electromagnetic field in the body will generate current, resulting in the absorption and dissipation of electromagnetic energy. SAR is often used in biodosimetry to characterize this physical process. The meaning of SAR is the electromagnetic power absorbed or consumed by unit mass of human tissue.

[0105] The SAR value generally refers to the heat energy generated by electromagnetic waves in mobile phone products, which is a measure of the impact on the human body. In the present disclosure, the antenna radiator 20 is configured to detect the electromagnetic wave absorption ratio, and the principle of electromagnetic energy dissipation by human tissue can be used to accurately determine whether the corresponding antenna area is blocked by an object.

[0106] In addition, since the electromagnetic waves of the communication antenna have a certain impact on the human body, for example, the SAR value indicates how much the heat energy of the mobile phone will affect the human body. The larger the value, the greater the impact on the human body, and vice versa. The detection data of the capacitance detection end can also be used to control the electromagnetic waves of the terminal within a certain range when there is an object blocking it, so as to minimize the impact on the human body.

[0107] The United States and Europe have already set regulations on the SAR (Specific Absorption Rate) of mobile phone radiation to the human body. The US standard is 1.6W / kg (1 gram) and the European standard is 2.0W / kg (10 grams). The safety standard value for mobile phones announced by the Federal Communications Commission (FCC) of the United States is 1.6, so as long as the SAR value of a mobile phone is below 1.6, it is a product within the safety standard.

[0108] Figure 4 FIG. 4 is a schematic diagram showing simulation results of a first antenna 41 of a middle frame assembly according to an exemplary embodiment. Figure 5 FIG. 4 is a schematic diagram showing simulation efficiency of a first antenna 41 of a middle frame assembly according to an exemplary embodiment.

[0109] like Figure 4 and Figure 5 As shown, the efficiency of the first antenna 41 (LMHB antenna) B3 / B1 is above -4dB, the efficiency of B32 / B40 / B41 antennas is above -3dB, the efficiency of B5 / B8 antennas is above -5dB, and the efficiency of B28 antennas is above -6dB, and the antenna performance is excellent.

[0110] like Figure 2 As shown, the second antenna 42 can be arranged in the first radiation section 23, the third antenna 43 can be arranged in the first radiation section 23, for example, can be arranged between the first end 11 and the second antenna 42, the second antenna 42 can be arranged between the third antenna 43 and the isolation capacitor. The second antenna 42 can be arranged between the third antenna 43 and the connecting section 25.

[0111] like Figure 2 As shown, in an exemplary embodiment of the present disclosure, the second antenna 42 may be arranged in the first radiation section 23, and the second antenna 42 may include a third frequency band and a fourth frequency band. For example, the third frequency band may be 1.575G, i.e., a GPS antenna. However, the present disclosure is not limited thereto, and the third frequency band may also be other frequency bands. For example, the fourth frequency band may be 2.402-2.48G, i.e., a WiFi 2.4G antenna. However, the present disclosure is not limited thereto, and the fourth frequency band may also be other frequency bands.

[0112] like Figure 2 As shown, in an exemplary embodiment of the present disclosure, in the first direction X, the distance L2+L3+L4 between the upper frame point C of the isolation capacitor of the first antenna 41 and the first end 21 corresponds to a quarter wavelength of the third frequency band (e.g., 1.575G) of the second antenna 42. For example, in the first direction X, the distance L2+L3+L4 between the upper frame point of the isolation capacitor of the first antenna 41 and the first end 21 is 17mm to 21mm. For example, the distance L2+L3+L4 between the upper frame point of the isolation capacitor of the first antenna 41 and the first end 21 can be about 18mm.

[0113] like Figure 2As shown, in an exemplary embodiment of the present disclosure, in the first direction X, the distance L2+L3 between the upper frame point B of the second antenna 42 and the first end 21 corresponds to a quarter wavelength of the fourth frequency band of the second antenna 42. In an exemplary embodiment of the present disclosure, in the first direction X, the distance L2+L3 between the upper frame point B of the second antenna 42 and the first end 21 is 5 mm to 8 mm. For example, the distance L2+L3 between the upper frame point B of the second antenna 42 and the first end 231 is about 6 mm.

[0114] In an exemplary embodiment of the present disclosure, the second antenna 42 may include an inductor L3+L4.

[0115] Figure 6 FIG. 4 is a schematic diagram showing simulation results of a second antenna 42 of a middle frame assembly according to an exemplary embodiment. Figure 7 FIG. 4 is a schematic diagram showing the efficiency of a second antenna 42 of a middle frame assembly according to an exemplary embodiment.

[0116] like Figure 6 and Figure 7 As shown, the efficiency of the first frequency band (GPS antenna) of the second antenna 42 is above -2.2dB, and the efficiency of the second frequency band (WIFI2.4G antenna) of the second antenna 42 is above -2.7dB, and the antenna performance is excellent.

[0117] In the present disclosure, the upper frame point A of the third antenna 43 may be disposed on the first radiation section 23 . However, the present disclosure is not limited thereto, and in some embodiments, the upper frame point A of the third antenna 43 may also be disposed on the second radiation section 24 .

[0118] In the present disclosure, the antenna frequency band covered by the third antenna 43 may be different from the antenna frequency band covered by the second antenna 42. For example, when the second antenna 42 and the third antenna 43 are both framed by the second radiation section 24, the antenna frequency band covered by the third antenna 43 may be different from the antenna frequency band covered by the second antenna 42, and good isolation may be achieved, thereby avoiding mutual interference between the two antennas.

[0119] In the exemplary embodiment of the present disclosure, the frequency band covered by the third antenna 43 is 5.15G to 5.85G, that is, it is a WIFI 5G antenna.

[0120] In an exemplary embodiment of the present disclosure, in the first direction X, the distance L2 between the upper frame point A of the third antenna 43 and the first end 21 corresponds to a quarter wavelength of the frequency band (5.15G to 5.85G) of the third antenna 43. For example, the distance L2 between the upper frame point A of the third antenna 43 and the first end 21 is 1 mm to 3 mm. For example, the distance L2 between the upper frame point A of the third antenna 43 and the first end 21 is about 2 mm.

[0121] In an exemplary embodiment of the present disclosure, the third antenna 43 may include an inductor L1+L2.

[0122] like Figure 1 As shown, in the first direction X, the distance L1 between the upper frame point A of the third antenna 43 and the first end 21 may be about 2 mm. The distance L1 between the upper frame point A of the third antenna 43 and the first end 21 may serve as a parasitic branch of the third antenna 43 .

[0123] Figure 8 It is a schematic diagram showing simulation results of a third antenna 43 of a middle frame assembly according to an exemplary embodiment. Fig. 9 is a schematic diagram of simulation efficiency of a third antenna 43 of a middle frame assembly according to an exemplary embodiment.

[0124] like Figure 8 and Fig. 9 As shown, the efficiency of the third antenna 43 (WIFI5G antenna) is above -5.2dB, and the antenna performance is excellent.

[0125] Fig.10 FIG. 4 is a schematic diagram showing simulation results of a first antenna 41 and a second antenna 42 of a middle frame assembly according to an exemplary embodiment. Fig.10 As shown, the isolation between the first antenna 41 (LMHB antenna) and the second antenna 42 (GPS & WIFI 2.4G antenna) is below -12dB, meeting the isolation requirements of the terminal antenna.

[0126] Fig.11 FIG. 4 is a schematic diagram showing simulation results of a first antenna 41 and a third antenna 43 of a middle frame assembly according to an exemplary embodiment. Fig.11 As shown, the isolation between the first antenna 41 (LMHB antenna) and the third antenna 43 (WIFI 5G antenna) is below -18dB, which meets the isolation requirements of the terminal antenna.

[0127] Fig.12 FIG. 4 is a schematic diagram showing simulation results of a second antenna 42 and a third antenna 43 of a middle frame assembly according to an exemplary embodiment. Fig.12 As shown, the isolation between the second antenna 42 (GPS & WIFI 2.4G antenna) and the third antenna 43 (WIFI 5G antenna) is below -20dB, which meets the isolation requirements of the terminal antenna.

[0128] In an exemplary embodiment of the present disclosure, the antenna may be grounded via an antenna isolation capacitor, and the antenna isolation capacitor may include: Figure 2 and Figure 3 The first antenna isolation capacitor C8, the second antenna isolation capacitor C15, and the third antenna isolation capacitor C5 are shown in FIG.

[0129] In the present disclosure, the isolation capacitor may include a first isolation capacitor C6 and a second isolation capacitor C7. The sum of the capacitance values ​​of the isolation capacitor and the antenna isolation capacitor is less than or equal to 200 pF.

[0130] In an exemplary embodiment of the present disclosure, the matching circuit of the antenna may further include a matching capacitor, for example Figure 2 The matching capacitors C1, C2, C3, C4, C9, C10, C11, C12, C13, and C14 are shown. Specifically, Table 1 shows the capacitance values ​​of each isolation capacitor and the antenna isolation capacitor.

[0131] Table 1

[0132]

[0133]

[0134] In the present disclosure, Table 2 shows the capacitance values ​​of various inductors and detection inductors.

[0135] Table 2

[0136]

[0137] Based on the same concept, the present disclosure also provides a terminal, including a middle frame assembly 1 as in any of the aforementioned embodiments. In an exemplary embodiment of the present disclosure, if the middle frame assembly 1 is applied to an electronic device such as a mobile phone, the first radiation segment 23 can be located at the head of the frame, that is, it can be located at the head of the electronic device. Generally speaking, the number of antennas distributed at the head of the terminal is the largest, and the structure is complex. The antenna layout provided by this solution can set antennas of three different bands on a limited frame, for example, it can be compatible with GPS, WIFI 2.4G, WIFI 5G, and LMHB multi-function antennas, which is conducive to improving the antenna signal quality of lightweight terminals.

[0138] In the present disclosure, the frame may be a metal frame.

[0139] Furthermore, usually when a user answers a call, the head of the terminal is close to the user. The configuration disclosed herein can utilize the frame of the head of the terminal as the detection end of the detection module, and can more accurately detect whether the user is close.

[0140] In addition, according to the configuration of the present disclosure, the frame of the terminal can trigger the SAR Sensor, thereby improving the user experience.

[0141] The antenna radiator 20 of the present disclosure is an antenna radiating section, which can be used as a part of the antenna. At the same time, the detection module is connected to the antenna radiator 20 to receive the electrical signal of the antenna radiator 20. Through such a setting, the antenna radiator 20 can be used as a part of the antenna and as a part of the detection module, and can play the functions required by the antenna and the detection module respectively. The setting of the present disclosure, on the one hand, can realize the use of components, save costs and space, and on the other hand, can also add detection elements that can be used by the detection module to the middle frame assembly 1, thereby improving the detection effect of the detection module.

[0142] In the present disclosure, the metal frame antenna also serves as a SAR sensor and cannot have 0 ohms or metal ribs back to the ground. As shown in the figure, this antenna solution is designed with two frame points on the LMHB antenna (E position and F position), one frame point on the GPS and WIFI 2.4G antenna (B position), one frame point on the WIFI 5G (A position), and two frame points on the isolation capacitor (C position and D position).

[0143] The MHB implementation method of the LMHB antenna is as follows: the side partition strip is 35mm away from the upper frame point of the D position (anywhere between 34-45mm is acceptable), the upper frame point of the D position is grounded through a 33pF capacitor, the side partition strip is 19mm away from the upper frame point of the E position (anywhere between 16-20mm is acceptable), and an SP2T switch is provided at the E position. In the MHB state, this switch is in the 33pF grounding state, and the partition strip is constructed to the E position antenna intermediate frequency quarter mode to ensure the intermediate frequency radiation efficiency; the partition strip is 6mm away from the upper frame point of the F position (anywhere between 5-8mm is acceptable), and the partition strip is constructed to the feed point quarter mode to ensure the high frequency radiation efficiency; matching design; the LMHB antenna feed point (the upper frame point of the F position) is equipped with two 4*SPST antenna switches for low-frequency and intermediate-frequency antenna tuning. The MHB band of the LMHB antenna is matched to B3 through parallel inductance and series capacitor, and the series inductance and parallel capacitor are matched to B41 band, and the switch tuning covers the B1 / B40 / B32 bands.

[0144] LMHB antenna LB implementation method, the side partition strip of the structure design is 35mm away from the upper frame point of the D position (anywhere between 34-45mm), the upper frame point of the D position is grounded through a 33pF capacitor, and the upper frame point of the E position is equipped with an SP2T switch. This switch is in an open circuit state in the LB state, and the partition strip is constructed to form a quarter mode of the antenna at the D position to ensure low-frequency radiation efficiency. Matching design, LMHB is equipped with two 4*SPST antenna switches, the LB band and the MHB band share the matching path, the two switches are in the ALL OFF state, and the series capacitor can match the low-frequency B8RX state, and the switch tuning covers the B5 / B28 / B8TX bands.

[0145] The implementation method of GPS and WIFI 2.4G antenna is as follows: the top partition bar of the structural design is 18mm (17-21mm is acceptable) away from the upper frame point of position C to construct the GPS antenna quarter mode to ensure the GPS radiation efficiency; the partition bar is 6mm (5-8mm is acceptable) away from the upper frame point of position B to construct a quarter mode from the partition bar to the feeding point (position B). The matching design matches the GPS frequency band through parallel inductance and series capacitors, and matches the WIFI 2.4G frequency band through series inductance and parallel capacitors.

[0146] WIFI 5G antenna implementation method, structural design partition strip distance A position upper frame point 2mm (1-3mm is OK) to construct WIFI 5G antenna quarter mode, to ensure its radiation efficiency. Matching design, the first stage series small capacitor to solve the isolation between WIF 5G antenna and GPS, WIFI 2.4G antenna, and then through the parallel inductor series capacitor parallel inductor matching WIFI 5G frequency band. LMHB antenna switch logic, LB realizes the switch state, SW1 switch, RF1 and RF2 are disconnected at the same time, SW3 four-way switch is disconnected,

[0147] SW2 RF1 disconnected, RF2 disconnected, RF3 disconnected, RF4 disconnected, S11 waveform covers B8RX,

[0148] SW2 RF1 is open, RF2 is open, RF3 is open, RF4 is closed, S11 waveform covers B8TX and B5RX,

[0149] SW2 RF1 is open, RF2 is open, RF3 is closed, RF4 is open, S11 waveform covers B5TX,

[0150] SW2 RF1 is open, RF2 is closed, RF3 is open, RF4 is open, S11 waveform covers B28RX,

[0151] SW2 RF1 closed, RF2 open, RF3 open, RF4 open, S11 waveform covers B28TX.

[0152] LMHB antenna switch logic, MHB realizes the switch state, when SW1 is switched on, RF1 is closed, RF2 is disconnected at the same time, and SW2 four-way switch is disconnected,

[0153] SW3 RF1 closed, RF2 open, RF3 open, RF4 open, S11 waveform covers B32,

[0154] SW3 RF1 is open, RF2 is closed, RF3 is open, RF4 is open, S11 waveform covers B3 and B41,

[0155] SW3 RF1 is open, RF2 is open, RF3 is closed, RF4 is open, S11 waveform covers B1,

[0156] SW3 RF1 is open, RF2 is open, RF3 is open, RF4 is closed, and the S11 waveform covers B40.

[0157] In the present disclosure, the terminal antenna is highly integrated, and the same metal frame is compatible with LMHB antenna, WIFI5G antenna, GPS & WIFI2.4G antenna, which makes full use of the mobile phone space and reduces the difficulty of stacking mobile phone antennas. LMHB antenna, WIFI5G antenna, GPS & WIFI2.4G antenna, the antenna passive efficiency is excellent, which greatly improves the positioning accuracy of the mobile phone and the communication quality of the user's mobile phone. The suspended metal frame structure can be used as an antenna and can be used as a SAR sensor through structural and matching design, which not only protects the user's radiation safety but also improves the user experience.

[0158] The terminal involved in the present disclosure may also be referred to as terminal equipment, user equipment (UE), mobile station (MS), mobile terminal (MT), etc., which is a device that provides voice and / or data connectivity to users. For example, the terminal can be a handheld device with wireless connection function, a vehicle-mounted device, etc. At present, some examples of frames are: smart phones (Mobile Phone), pocket computers (Pocket Personal Computer, PPC), handheld computers, personal digital assistants (Personal Digital Assistant, PDA), laptops, tablet computers, wearable devices, or vehicle-mounted devices, etc. In addition, when it is a vehicle-to-everything (V2X) communication system, the frame device can also be a vehicle-mounted device. It should be understood that the embodiments of the present disclosure do not limit the specific technology and specific device form adopted by the terminal.

[0159] It is understandable that the middle frame assembly and terminal provided in the embodiments of the present disclosure include hardware structures and / or software modules corresponding to the execution of each function in order to realize the above functions. In combination with the units and algorithm steps of each example disclosed in the embodiments of the present disclosure, the embodiments of the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the technical solution of the embodiments of the present disclosure.

[0160] Fig.13800 is a block diagram of an apparatus 800 according to an exemplary embodiment. For example, the apparatus 800 may be a mobile phone, a computer, a digital broadcast frame, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0161] Reference Fig.13 , the device 800 may include one or more of the following components: a processing component 802 , a memory 804 , a power component 806 , a multimedia component 808 , an audio component 810 , an input / output (I / O) interface 812 , a sensor component 814 , and a communication component 816 .

[0162] The processing component 802 generally controls the overall operation of the device 800, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 802 may include one or more processors 820 to execute instructions to complete all or part of the steps of the above-mentioned method. In addition, the processing component 802 may include one or more modules to facilitate the interaction between the processing component 802 and other components. For example, the processing component 802 may include a multimedia module to facilitate the interaction between the multimedia component 808 and the processing component 802.

[0163] The memory 804 is configured to store various types of data to support operations on the device 800. Examples of such data include instructions for any application or method operating on the device 800, contact data, phone book data, messages, pictures, videos, etc. The memory 804 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.

[0164] The power component 806 provides power to the various components of the device 800. The power component 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the device 800.

[0165] The multimedia component 808 includes a screen that provides an output interface between the device 800 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundaries of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front camera and / or a rear camera. When the device 800 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera may receive external multimedia data. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

[0166] The audio component 810 is configured to output and / or input audio signals. For example, the audio component 810 includes a microphone (MIC), and when the device 800 is in an operating mode, such as a call mode, a recording mode, and a speech recognition mode, the microphone is configured to receive an external audio signal. The received audio signal can be further stored in the memory 804 or sent via the communication component 816. In some embodiments, the audio component 810 also includes a speaker for outputting audio signals.

[0167] I / O interface 812 provides an interface between processing component 802 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include but are not limited to: home button, volume button, start button, and lock button.

[0168] The sensor assembly 814 includes one or more sensors for providing various aspects of the status assessment of the device 800. For example, the sensor assembly 814 can detect the open / closed state of the device 800, the relative positioning of components, such as the display and keypad of the device 800, and the sensor assembly 814 can also detect the position change of the device 800 or a component of the device 800, the presence or absence of user contact with the device 800, the orientation or acceleration / deceleration of the device 800, and the temperature change of the device 800. The sensor assembly 814 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 814 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 may also include an accelerometer, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0169] The communication component 816 is configured to facilitate wired or wireless communication between the device 800 and other devices. The device 800 can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 816 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 816 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0170] In an exemplary embodiment, the apparatus 800 may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors or other electronic components to perform the above method.

[0171] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 804 including instructions, and the instructions can be executed by the processor 820 of the device 800 to perform the above method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0172] It is to be understood that in the present disclosure, "plurality" refers to two or more than two, and other quantifiers are similar. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. The singular forms "a", "the" and "the" are also intended to include plural forms, unless the context clearly indicates other meanings.

[0173] It is further understood that the terms "first", "second", etc. are used to describe various information, but such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other, and do not indicate a specific order or degree of importance. In fact, the expressions "first", "second", etc. can be used interchangeably. For example, without departing from the scope of the present disclosure, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information.

[0174] It will be further understood that the terms “center”, “longitudinal”, “lateral”, “front”, “back”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation.

[0175] It can be further understood that, unless otherwise specified, “connection” includes a direct connection without other components between the two, and also includes an indirect connection with other components between the two.

[0176] It is further understood that, although the operations are described in a specific order in the drawings in the embodiments of the present disclosure, it should not be understood as requiring the operations to be performed in the specific order shown or in a serial order, or requiring the execution of all the operations shown to obtain the desired results. In certain environments, multitasking and parallel processing may be advantageous.

[0177] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0178] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A middle frame assembly, characterized in that: include: A frame, at least a portion of which is configured as an antenna radiator, the antenna radiator comprising a first radiating section, a connecting section, and a second radiating section connected in sequence, the connecting section being grounded via an isolation capacitor; a first antenna, wherein an upper frame point of the first antenna is arranged at the second radiation section; a second antenna, wherein an upper frame point of the second antenna is arranged at the first radiation section; A third antenna, the upper frame point of the third antenna is arranged on the antenna radiator; as well as, The detection module is connected to the antenna radiator, and the detection module obtains the electrical signal of the antenna radiator.

2. The middle frame assembly according to claim 1, characterized in that: The first radiating section extends in a first direction, and the second radiating section extends in a second direction.

3. The middle frame assembly according to claim 1, characterized in that: The upper frame point of the third antenna is set at the first radiation segment, and the antenna frequency band covered by the third antenna is different from the antenna frequency band covered by the second antenna.

4. The middle frame assembly according to claim 3, characterized in that: The upper frame point of the second antenna is arranged between the upper frame point of the third antenna and the connecting section.

5. The middle frame assembly according to claim 2, characterized in that: The frame includes a first break and a second break, the first break is adjacent to the first end of the antenna radiator, the second break is adjacent to the second end of the antenna radiator, and the first end and the second end are arranged opposite to each other.

6. The middle frame assembly according to claim 5, characterized in that: The first antenna is configured to cover a first frequency band and a second frequency band in different time periods respectively.

7. The middle frame assembly according to claim 6, characterized in that: The first antenna includes a first matching circuit, a second matching circuit, a first upper frame point, and a second upper frame point; The first matching circuit is electrically connected to the second radiation segment through the first upper frame point, and the first matching circuit includes a first switch group and a first antenna isolation capacitor; The second matching circuit is electrically connected to the second radiation segment through the second upper frame point, and the second matching circuit includes a second switch group.

8. The middle frame assembly according to claim 7, characterized in that: When the first antenna covers the first frequency band, the first switch group is disconnected, and in the second direction, the distance between the connecting section and the second end corresponds to one quarter of the wavelength of the first frequency band.

9. The middle frame assembly according to claim 7, characterized in that: When the first antenna covers the second frequency band, the first switch group is turned on and grounded through the first antenna isolation capacitor. In the second direction, the distance between the first upper frame point and the second end corresponds to one-quarter wavelength of the intermediate frequency band of the second frequency band, and the distance between the second upper frame point and the second end of the first antenna corresponds to one-quarter wavelength of the high frequency band of the second frequency band.

10. The middle frame assembly according to claim 7, characterized in that: The second matching circuit includes a second switch group and a third switch group connected in series; The second switch group includes a plurality of first switches connected in parallel to each other, and capacitors connected in series with the plurality of first switches respectively; The third switch group includes a plurality of second switches connected in parallel with each other, and inductors connected in series with the plurality of second switches respectively.

11. The middle frame assembly according to claim 10, characterized in that: The second matching circuit includes a first matching capacitor and a second matching capacitor connected to each other, one end of the second switch group is grounded, and the other end of the second switch group is connected to a connection node between the first matching capacitor and the second matching capacitor.

12. The middle frame assembly according to claim 11, characterized in that: One end of the third switch group is grounded, and the other end of the third switch group is connected to a connection node between the first matching capacitor and the second matching capacitor.

13. The middle frame assembly according to claim 11, characterized in that: The second matching circuit includes a matching inductor, a first end of the matching inductor is connected to the first matching capacitor, a second end of the matching inductor is grounded, and the second end is connected to an input end of the second matching circuit.

14. The middle frame assembly according to claim 11, characterized in that: The second matching circuit includes a second antenna isolation capacitor, one end of the second antenna isolation capacitor is grounded, and the other end of the first antenna isolation capacitor is connected to the second end of the matching inductor.

15. The middle frame assembly according to claim 7, characterized in that: The connecting section is provided with a first isolation portion and a second isolation portion, and the second isolation portion is provided between the first isolation portion and the second radiation section; The isolation capacitor includes a first isolation capacitor and a second isolation capacitor. The first isolation capacitor is arranged in the first isolation portion, and the second isolation capacitor is arranged in the second isolation portion.

16. The middle frame assembly according to claim 15, characterized in that: In the first direction, the distance between the upper frame point of the first isolation portion and the first end is 17 mm to 21 mm; and In the second direction, a distance between an upper frame point of the second isolation portion and the second end is 34 mm to 45 mm.

17. The middle frame assembly according to claim 15, characterized in that: In the second direction, the distance between the first upper frame point and the second end of the first antenna is 16 mm to 20 mm; In the second direction, the distance between the second upper frame point of the first antenna and the second end is 5 mm to 8 mm, The first upper frame point is located between the second isolation portion and the second end, and the second upper frame point is located between the second end and the first upper frame point.

18. The middle frame assembly according to claim 6, characterized in that: The first frequency band is 700M~960M; The second frequency band is 1710M~2690M.

19. The middle frame assembly according to claim 15, characterized in that: The second antenna includes a third frequency band and a fourth frequency band. In the first direction, the distance between the upper frame point of the first isolation portion and the first end corresponds to one-quarter wavelength of the third frequency band of the second antenna, and the distance between the upper frame point of the second antenna and the first end corresponds to one-quarter wavelength of the fourth frequency band of the second antenna.

20. The middle frame assembly according to claim 19, characterized in that: The third frequency band is 1.575G; and / or The fourth frequency band is 2.402-2.48G.

21. The middle frame assembly according to claim 19, characterized in that: In the first direction, a distance between the upper frame point of the first isolation portion and the first end is 17 mm to 21 mm, and a distance between the upper frame point of the second antenna and the first end is 5 mm to 8 mm.

22. The middle frame assembly according to claim 5, characterized in that: In the first direction, a distance between an upper frame point of the third antenna and the first end corresponds to a quarter wavelength of a frequency band of the third antenna.

23. The middle frame assembly according to claim 22, characterized in that: In the first direction, a distance between an upper frame point of the third antenna and the first end is 1 mm to 3 mm.

24. The middle frame assembly according to claim 1, characterized in that: The frequency band covered by the third antenna is 5.15G to 5.85G.

25. The middle frame assembly according to claim 1, characterized in that: The detection module is electrically connected to the antenna radiator through a third matching circuit, and the third matching circuit at least includes a detection inductor.

26. The middle frame assembly according to claim 10, characterized in that: In the first direction, the length of the connecting section is 5 mm to 10 mm; and / or In the second direction, the length of the connecting section is 5 mm to 10 mm.

27. The middle frame assembly according to claim 2, characterized in that: The first radiation section is located at the head of the frame.

28. The middle frame assembly according to claim 2, characterized in that: The antenna is grounded via an antenna isolation capacitor. The sum of the capacitance values ​​of the isolation capacitor and the antenna isolation capacitor is less than or equal to 200 pF.

29. A terminal, characterized in that: Comprising a middle frame assembly as claimed in any one of claims 1 to 28.

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